Black Forest Labs reported that its FLUX.1 dev image-generation model needs only 10GB of video memory on NVIDIA hardware with optimized FP4 numerical precision. Its announcement said this configuration on a GeForce RTX 5090 runs twice as fast as the same model on an RTX 4090 using plain BF16. Because the graphics card and the numerical format both differ, the result does not isolate how much of the speedup came from either change. The announcement gave no memory baseline for the 10GB figure. Collaboration announcement.
